Jesse m



(No Model.)

J. M. HARE.

SEESAW.

No. 308,962. Patented Dec. 9, 1884.

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Unirnn Starts PATENT @rrree.

JESSE M. HARE, 0F BALTIMORE, MARYLAND.

LSPECIFICATIUN forming part of Letters Patent No, 308,962, dated December 9), 1884.

Application filc(lAp1il5,1884. (No model.)

To all whom it may concern.-

Be it known that I, JEssE M. HARE, of Baltimore, in the State of Maryland, have invented a new and useful Improvement in See saws, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, forming partof this specification.

This invention consists of an improvement by which the seats of a seesaw are kept horizontal and the operation of the device rendered easy, to adapt it for use by very young children, as hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of my improved seesaw. Fig. 2 is a longitudinal vertical section, and Fig. 3 a plan view, of the same.

Aindicates a stand or supportirig-frame, in the top of which are pivoted the connected oscillating beams B.

On the ends of the beams B are vertical standards 0, between which are pivoted the chairs D.

In the stand A, below the beams B, is also pivoted a lever, B, the ends of which are pivoted to the lower ends of arms F, attached to the backs of the chairs and extending down below the beams B. The lever E is formed with a downwardextending projection, G, at its center. and its pivot H passes through the lower end of this projection. Vith this construction, when the beams B are oscillated, the lever B will be oscillated by means of its connection with the chairs, and the said lever will in turn oscillate the chairs to keep them in a horizontal position by means of its traversing movement due to the location of its pivot.

On the ends of the lever E are mounted treadles or carriages 1, consisting of footbraces pivoted at their outerends to the proj ections or arms F at points between the chairs 1) and ends of lever E, and supported on the lever E by means of rollers J. l'Vith this construction, as either chair is elevated by the oscillation of beams B, the lever E and the treadle connected to said chair move inward toward the center of the beams, so that if the occupant of the chair braces himself against 50 the treadle he can drive the treadle inward toward the center, and thus cause his end of the beam to rise by the exertion of muscular 1 force. Where the chairs are balanced against each other by occupants of equal Weight a very slight pressure on the treadles in turn will cause the seesaw to move with great ease. \Vhere the occupants of the chairs are not of equal weight, they may be balanced against each other by means of adjustable weights K, arranged in any obvious manner. Suchweights K may be attached to adjustable bars L, adapt ed to slidein supports at one side of the seats, which bars are to be so arranged that they may be adjusted properly by the occupants alter they are seated.

To the stand A are attached steps or ladders M, leading up to a platform, M, or to the chairs, and to the platform or ladders are pivoted vertical levers N, having shoulders 0, adapted to engage with the under side of one of the beams B, to prop and support the seesaw in a horizontal position while persons are being seated in the seesaw or descending therefrom. The handles of the said levers are to extend up near the chairs, so that they can be operated therefrom.

Instead of using two beams B, connected together at the ends, as shown, a single beam may be used for supporting the chairs.

P P represent cushion-springs attached to the lower ends of arms F, and adapted to be compressed in to rn, to break the jar when said arms strike the ground. Springs may also be located on the stand A, to connect the beams B elastically therewith in such manner that the springs will be alternately compressed or expanded by the oscillation of the seesaw, to prevent jarring and to increase the ease of op eration.

Q, indicates a girder attached to the beam or beams B in a well-known manner, to give the required strength where said beam is made light.

\Nhere a number of seesaws are to be used,

as on pleasure'grounds, a long platform may a be constructed, alongside of which the seesaws may be arranged.

\Vhat I claim is 1. The combination,with the chairs of a seesaw, of a traversing lever for keeping the chairs I oo in horizontal positions during the movement of the same, substantially as shown and described.

2. The combination, with the oscillating beam or beams of a seesaw and the chairs or seats supported on the same, of a traversing lever pivoted below said beams and connected to said chairs at its ends, substantially as shown and described.

3. The combination, with the oscillating beam or beams of a seesaw and the chairs supported on the same, of a traversing lever pivoted below said beams and having its ends connected to arms projecting downward from the chairs, and the treadles or carriages supported on said lever and pivoted to said arms between the chairs and said lever, substantially as shown and described.

purpose set forth.

5. The combination, with the oscillating beam or beams of a seesaw, of adjustable props or levers for supporting said beam or beams in a horizontal position, substantially as and for the purpose set forth.

JESSE M. HARRY.

WVitnesses:

= WM. H. BAYZAUD,

GEORGE T. HOLLYDAY. 

